CN109184244B - Cantilever cable net type horizontal protection shed and construction method - Google Patents
Cantilever cable net type horizontal protection shed and construction method Download PDFInfo
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- CN109184244B CN109184244B CN201811324544.8A CN201811324544A CN109184244B CN 109184244 B CN109184244 B CN 109184244B CN 201811324544 A CN201811324544 A CN 201811324544A CN 109184244 B CN109184244 B CN 109184244B
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 233
- 239000010959 steel Substances 0.000 claims abstract description 233
- 238000009434 installation Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 13
- 239000002023 wood Substances 0.000 description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The overhanging rope net type horizontal protection shed comprises a plurality of I-steel bars arranged on the top or the side surface of a building main body, wherein one end of each I-steel bar is fixed on the top or the side surface of the building main body, the other end of each I-steel bar extends to the outside of the building main body in an overhanging manner to form an overhanging part, the overhanging rope net type horizontal protection shed also comprises a plurality of horizontal steel wire ropes, each horizontal steel wire rope sequentially penetrates through the overhanging part of each I-steel bar to enable all I-steel bars to be connected in series through each horizontal steel wire rope, each horizontal steel wire rope is stretched to a state with a certain prestress, and two ends of each horizontal steel wire rope are respectively fixed on the building main body or fixed on two I-steel bars penetrating through the two I-steel bars or mutually overlapped to form an annular steel wire rope ring. Compared with the prior art, the system has the advantages of safe structure and strong applicability; the installation and the disassembly are convenient and quick, the construction efficiency can be effectively improved, and the construction period is remarkably saved.
Description
Technical Field
The invention relates to the technical field of building protection sheds, in particular to a cantilever cable net type horizontal protection shed and a construction method.
Background
At present, a horizontal protection shed is adopted for protection in high-rise building construction, and the horizontal protection shed belongs to common protection safety measures on a building site. The traditional horizontal protection shed takes I-steel or steel pipes as a stressed main body, has low erection speed and single structural form, is difficult to disassemble in the later stage, and has a large optimization space. In the prior art, the cantilever type protective shed is provided with a protective shed structure which is arranged on the outer side of I-steel and one side of the protective shed, which is far away from the I-steel, is hung on the outer side of a structural floor through a steel wire rope, the protective shed structure adopts a steel wire net structure, the steel wire nets of the cantilever type protective shed are not related to each other, however, the connection parts of the adjacent steel wire nets cannot bear larger force, so that the safety coefficient is lower, and the protective effect cannot be completely achieved.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the cantilever cable net type horizontal protection shed and the construction method thereof, which have flexible structural form, higher safety coefficient, simple installation and disassembly and higher construction speed.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a cable net formula horizontal protection canopy encorbelments, including setting up a plurality of I-steel at building main part top or side, the one end of each I-steel is fixed at building main part top or side, and the other end of each I-steel is the extension of encorbelmenting to building main part outside and forms the portion of encorbelmenting, still include a plurality of horizontal wire rope, each horizontal wire rope passes the portion of encorbelmenting of each I-steel in proper order and makes all I-steel pass through each horizontal wire rope string, each horizontal wire rope is the tensioning to the state that has certain prestressing force and each horizontal wire rope's both ends are fixed respectively on the building main part or are fixed on two I-steels of its head and tail that passes or overlap joint each other and form annular wire rope circle.
A construction method of a cantilever cable net type horizontal protection shed comprises the following steps:
arranging a plurality of I-beams on the top or the side surface of a building main body, wherein one end of each I-beam is fixed on the top or the side surface of the building main body, and the other end extends to the outside of the building main body in a cantilever manner to form a cantilever part;
secondly, threading a plurality of horizontal steel wire ropes on the overhanging parts of the I-beams to enable all the I-beams to be connected in series through the horizontal steel wire ropes;
thirdly, fixing the head end of the horizontal steel wire rope on a building main body or a first I-steel through which the horizontal steel wire rope passes, and tensioning the tail end of the horizontal steel wire rope to enable the tail end of the horizontal steel wire rope to have certain prestress;
and fourthly, fixing the tail end of the horizontal steel wire rope on the building main body or on the last I-steel through which the horizontal steel wire rope passes or mutually lapping with the head end of the horizontal steel wire rope to form an annular steel wire rope ring.
Compared with the prior art, the invention has the following beneficial effects:
(1) The overhanging rope net type horizontal protection shed has reasonable stress on the platform, and is safe and reliable. The main stress component of the protective shed is a steel wire mesh formed by I-steel and a prestressed steel wire rope, so that a composite bearing comprehensive structure is formed, the system structure is safe, and the applicability is strong;
(2) The cantilever cable net type horizontal protection shed has the advantages of convenient platform construction and simple process. Compared with the horizontal protective shed of the traditional construction method, the overhanging protective shed disclosed by the invention has the advantages that as the steel wire mesh formed by the I-steel and the prestressed steel wire rope is adopted as the stressed main body, the time-consuming construction process of erecting the steel pipe on the I-steel in the original construction process is changed into the process of arranging and tensioning the prestressed steel wire mesh on the I-steel, the installation and the disassembly are relatively convenient and quick, the construction efficiency can be effectively improved, the construction period is remarkably saved, and the beneficial conditions are created for the development of subsequent construction.
(3) The overhanging rope net type horizontal protection shed platform saves materials and has low overall cost. The main body stress structure of the platform is erected by only a small amount of steel wire ropes and tensioning auxiliary equipment, can be repeatedly used and has low overall investment.
(4) The steel wire rope in the cantilever rope net type horizontal protection shed belongs to a flexible component and has good deformation performance. The structure system skillfully utilizes the self attribute of the steel wire rope, can adapt to the requirements of various different building shapes, has flexible structure form and stronger applicability.
Drawings
FIG. 1 is a schematic axial view of a shelter according to the present invention.
Fig. 2 is a schematic diagram of the distance between the positioning ring and the pulley when the length of the cantilever of the i-steel is 6 m.
FIG. 3 is a schematic view showing the distance between the positioning ring and the pulley when the length of the cantilever of the I-steel is 4.5 m.
Fig. 4 is a schematic view of the installation structure of the anchor ring according to the present invention.
Fig. 5 is a schematic structural view of an auxiliary tensioning support according to the present invention.
Fig. 6 is a schematic diagram of the horizontal steel wire rope according to the present invention.
Fig. 7 is a schematic diagram of a lap locking structure of a horizontal wire rope according to the present invention.
In the figure: building main body 1, straight-side I-steel 2, corner I-steel 3, anchor ring 4, protruding ring part 4-1 and pre-buried bent part 4-
2. The device comprises a positioning ring 5, a pulley 6, an upper side beam 7, a horizontal steel wire rope 8, a diagonal steel wire rope 9, an auxiliary tensioning support 10, vertical steel bars 10-1, reinforcing ribs 10-2 and horizontal steel bars 10-3.
Detailed Description
The invention is described in further detail below with reference to the drawings in the specification and the detailed description is given.
Embodiment one: as shown in fig. 1, the cantilever rope net type horizontal protection shed comprises a plurality of I-steel arranged at the top or the side surface of a building main body 1, wherein one end of each I-steel is fixed at the top or the side surface of the building main body 1, the other end of each I-steel extends to the outside of the building main body 1 in a cantilever mode to form a cantilever part, the cantilever rope net type horizontal protection shed also comprises a plurality of horizontal steel wire ropes 8, each horizontal steel wire rope 8 sequentially penetrates through the cantilever part of each I-steel to enable all the I-steel to be connected in series through each horizontal steel wire rope 8, each horizontal steel wire rope 8 is tensioned to a state with a certain prestress, and two ends of each horizontal steel wire rope 8 are respectively fixed on the building main body 1 or on two I-steel heads and tails penetrated by the building main body or are mutually overlapped to form an annular steel wire rope ring.
Further, all the i-steel rings are formed into a ring shape around the top or the side surface of the building main body 1, two ends of each horizontal steel wire rope 8 are mutually overlapped to form annular steel wire rope rings, the geometric centers of the steel wire rope rings are respectively positioned at the geometric centers of the building main body, and the steel wire rope rings are outwards extended in a divergent manner along the radial direction of the geometric centers of the steel wire rope rings, so that an annular steel wire net is formed.
The I-steel inclines to set up and its tip of encorbelmenting portion is higher than its stiff end of fixing at building main part 1 top, and the inclination that the I-steel inclines to produce is greater than 1 degree and is less than 2 degrees. The edge of the building main body 1 is also provided with a plurality of gaskets for supporting each I-steel, and according to practical situations, when the gasket at the edge end of the structure cannot meet the requirement due to the inclination angle, a square can be adopted to replace the gasket.
The building main body 1 is also provided with an upper side beam 7, the tail end of the cantilever part of the I-steel is fixedly connected with a diagonal cable wire 9, and one end of the diagonal cable wire 9, which is far away from the I-steel, is fixedly connected with the upper side beam 7 of the building main body 1 so as to provide tension for suspended parts of the I-steel.
Further, as shown in fig. 1 and 2, the i-steel comprises straight-edge i-steel 2 and corner i-steel 3, each straight-edge i-steel 2 and each corner i-steel 3 form a rectangular annular structure at the top or side of the building main body 1, a plurality of positioning rings 5 gradually far away from the building main body 1 are welded on the overhanging part of each straight-edge i-steel 2, and pulleys 6 with the same number as the positioning rings 5 are arranged on the overhanging part of each corner i-steel 3; the head end of each horizontal steel wire rope 8 passes through the pulley 6 of the auxiliary tensioning support 10, sequentially passes through the positioning ring 5 on each straight-side I-steel 2 and the pulley 6 on each corner I-steel 3, and finally returns to and passes through the pulley 6 on the auxiliary tensioning support 10 and is fixedly connected with the tail end of the horizontal steel wire rope to form an annular steel wire rope ring.
Embodiment two: as shown in fig. 1-7, a construction method of the overhanging rope net type protective shed comprises the following steps:
firstly, arranging a plurality of I-steel on the top or side surface of a building main body 1, wherein one end of each I-steel is fixed on the top or side surface of the building main body 1, and the other end extends to the outside of the building main body 1 in a cantilever manner to form a cantilever part; the plurality of I-steel rings around the top or the side surface of the building main body to form a ring shape, each I-steel is obliquely arranged, the tail end of the overhanging part of each I-steel is higher than the fixed end of the overhanging part of each I-steel, which is fixed on the top or the side surface of the building main body 1, the inclination angle generated by the inclination of the I-steel is more than 1 degree and less than 2 degrees, the edge of the building main body 1 is also provided with a plurality of gaskets for supporting each I-steel, and according to the actual situation, when the gasket at the edge end of the structure cannot meet the requirement due to the inclination angle, a square can be used for replacing the gasket; the I-steel comprises two types of straight-side I-steel 2 and corner I-steel 3, each straight-side I-steel 2 and each corner I-steel 3 form a rectangular annular structure at the top of the building main body 1, and a plurality of positioning rings 5 gradually far away from the building main body 1 are welded on the overhanging part of each straight-side I-steel 2; the overhanging parts of the I-steel 3 at each corner are provided with pulleys 6 which are the same as the positioning rings 5 in number and gradually far away from the building main body 1. The distance between the positioning rings 5 and the distance between the pulleys 6 on the I-steel 3 at the corners are determined according to the length of the overhanging part of the I-steel, and when the length is 6.0m, the distance between the positioning rings 5 and the pulleys 6 on the I-steel 3 at the corners is shown in figure 2; when the length of the i-beam extending to the outside of the building body 1 is 4.5m, the distance between the positioning rings 5 and the pulleys 6 on the i-beam 3 at each corner is as shown in fig. 3. As shown in fig. 4, a plurality of anchor rings 4 made of round steel are buried in the top of the building main body 1, and the anchor rings 4 are used for fixing each i-steel. The section diameter of the steel bar adopted by the anchor ring 4 is not smaller than phi 16, and the embedded position is not smaller than 100mm from the edge of the building main body 1. The anchor ring 4 in the shape of a Chinese character 'ji' comprises a protruding ring part 4-1 and a pre-buried bent part 4-2 below the protruding ring part, wherein the pre-buried bent part 4-2 is pre-buried in the building main body 1, and I-steel sequentially penetrates through the protruding ring parts 4-1 of the anchor ring 4 in the shape of a Chinese character 'ji' towards one end of the building main body 1 so as to be fixed at the top of the building main body 1.
And secondly, after the I-steel is placed, reinforcing the anchor ring 4 and the supporting position. Before reinforcement construction, ultrasonic nondestructive inspection is carried out on the quality of welding seams of welding parts of the original steel structure, and cutting repair welding is carried out on unqualified welding seams, so that the construction quality of the original steel structure is ensured. After the reinforcement is completed, the strength of the anchor ring 4 and the supporting position meets the requirement and the stress is uniform.
Thirdly, arranging an auxiliary tensioning support 10 on the top or the side surface of the building main body 1, wherein two pulleys 6 with the same height are arranged at one end, far away from the building main body 1, of the auxiliary tensioning support 10, and the auxiliary tensioning support 10 is fixed on the top of the building main body 1 towards one end, where the building main body 1 is arranged; the auxiliary tensioning support 10 comprises two identical and mutually parallel vertical steel bars 10-1, an X-shaped reinforcing rib 10-2 is welded between the two vertical steel bars 10-1, and the vertical steel bars 10-1 at two ends of the X-shaped reinforcing rib 10-2 are also welded
Two horizontal steel bars 10-3 perpendicular to the vertical steel bars 10-1 are arranged at one end of the two steel bars far away from the building main body 1
A pulley 6 of the same height, two reinforcing bars are fixed to the top of the building body 1 toward one end where the building body 1 is installed.
And fourthly, threading a plurality of horizontal steel wire ropes 8 on the overhanging parts of the I-beams so that all the I-beams are connected in series through the horizontal steel wire ropes 8.
And fifthly, arranging a fixed end on one side of an auxiliary tensioning support 10 on the building main body 1, wherein the first end of a horizontal steel wire rope 8 is fixed on the fixed end on one side of the auxiliary tensioning support 10 on the building main body 1 or on a first I-steel penetrated by the fixed end, the tail end of the horizontal steel wire rope 8 penetrates through a pulley 6 on one side of the auxiliary tensioning support 10 close to the fixed end, sequentially penetrates through a positioning ring 5 on each straight-side I-steel 2 and a pulley 6 on each corner I-steel 3, and finally returns to the auxiliary tensioning support 10 and penetrates through a pulley 6 on one side far from the fixed end so as to connect the I-steels in series. As shown in fig. 6, the tail end of the horizontal steel wire rope 8 is passed through
Stretching equipment (such as a small jack) stretches to enable the equipment to bear a certain external load, a stretching control value meets the requirement of a pretension value, and an included angle between the horizontal steel wire rope 8 and the steel bar in the auxiliary stretching support 10 during stretching is larger than 45 degrees; in the tensioning process of the horizontal steel wire rope 8, deflection monitoring is carried out, if the deflection of the lowest point of the horizontal steel wire rope 8 is larger than a designed deflection value, whether the horizontal steel wire rope 8 reaches the pretension control force or not is checked, and if the pretension control force is not reached, the horizontal steel wire rope 8 is subjected to tensioning.
Sixth, as shown in fig. 7, after the horizontal steel wire rope 8 is tensioned to a required stress, the tail end of the horizontal steel wire rope 8 is fixed on the building main body 1 or on the last i-steel through which the horizontal steel wire rope passes or is mutually overlapped with the head end of the horizontal steel wire rope 8 to form an annular steel wire rope ring. The tail end and the head end of the horizontal steel wire rope 8 are mutually overlapped, namely, the intersection node of the horizontal steel wire rope 8 between the two pulleys 6 of the auxiliary tensioning support 10 is overlapped and locked through a common prestress locking plate clamp anchor with a proper model, so that the horizontal steel wire rope 8 forms a closed ring; after the horizontal steel wire rope 8 is in lap joint locking, the horizontal steel wire rope 8 and the I-steel are fixed by using a clamping ring at the position where the horizontal steel wire rope 8 passes through the positioning ring 5 on the I-steel, so that the stress of the horizontal steel wire rope 8 and the I-steel meets the design requirement.
Seventh, the remaining horizontal wire ropes 8 are operated according to the fourth to sixth steps to form a plurality of groups of ring-shaped wire rope loops stretched to a certain stress, the geometric center of each wire rope loop is located at the geometric center of the building body, and each wire rope loop is divergently extended outward in the radial direction of the geometric center thereof to form a ring-shaped wire net to bear a certain external load.
Eighth, the steel bar hanging rings of phi 16 are pre-buried at the edge of the upper side beam 7 above the protection shed, and each steel bar hanging ring corresponds to each I-steel respectively and is used as a connecting point at the other end of the inclined-pull steel wire rope 9. And a diagonal cable 9 is fixedly arranged at the end part of one end of each I-steel extending to the outside of the building main body 1, and the other end of the diagonal cable 9 is connected and fixed to a steel bar hanging ring at the end part of the upper side beam 7 above the building main body 1 so as to provide tension for the suspended part of each I-steel. Further, two inclined-pulling steel wire ropes 9 are arranged on the end parts of the straight-side I-steel 2 in the straight-line area of the building main body 1; three oblique steel wire ropes are arranged on the end parts of the I-steel 3 at each corner of the corner area of the building main body 1. The inclined-pulling steel wire ropes 9 are guaranteed to be straight and cannot be mutually overlapped, and the tightness of the inclined-pulling steel wire ropes 9 is adjusted by adopting a chain block. The inclined angle of the inclined steel wire rope 9 is more than 45 degrees.
And ninth, paving the bamboo hops and the wood plywood. And sequentially paving a wood veneer and a bamboo springboard along the outward extending direction of each I-steel. In order to ensure the stability of the wood veneer and the bamboo springboard in construction, iron wires are drilled on the wood veneer to fix the wood veneer and the I-steel, and the bamboo springboard is directly bound and fixed with the drilled wood veneer. Paving a lower layer of bamboo springboards from inside to outside, and then arranging an upper layer of wood plywood after finishing the lower layer of protection boards.
And tenth, after the overhanging rope net type protective shed is erected, the lower part of the protective shed is provided with a safety pocket net, so that the safety pocket net is ensured to fully cover the space under the protective shed. The components or other material equipment are not accurately stored under the safety net, so that the effective buffer height of the personnel falling into the safety net is ensured, and the interface of the safety net is required to be tightly connected.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a cable net formula level protection canopy encorbelments, includes a plurality of I-steel that sets up at building main part top or side, and the one end of each I-steel is fixed at building main part top or side, and the other end of each I-steel is the portion of encorbelmenting and extends to building main part outside and form the portion of encorbelmenting, its characterized in that: the device also comprises a plurality of horizontal steel wire ropes, each horizontal steel wire rope sequentially passes through the overhanging part of each I-steel to enable all the I-steel to be connected in series through each horizontal steel wire rope, the two ends of each horizontal steel wire rope are respectively fixed on the building main body or on two I-shaped steels passing through the building main body or mutually overlapped to form an annular steel wire rope ring;
the I-shaped steel rings are annularly formed around the top or the side surface of the building main body, the geometric centers of the steel wire rope rings are respectively positioned at the geometric centers of the building main body, and the steel wire rope rings are radially and divergently extended outwards along the geometric centers of the steel wire rope rings so as to form an annular steel wire net;
each I-steel inclines to be arranged, the tail end of the overhanging part of each I-steel is higher than the fixed end of the top of the building main body, and the inclination angle generated by the inclination of the I-steel is more than 1 degree and less than 2 degrees.
2. The overhanging rope net type horizontal protection shed as claimed in claim 1, wherein: the tail end of the overhanging part of the I-steel is fixedly connected with a diagonal steel wire rope, and one end of the diagonal steel wire rope, which is far away from the I-steel, is fixedly connected with an upper side beam of the building main body.
3. The overhanging rope net type horizontal protection shed as claimed in claim 2, wherein: the I-steel comprises straight-side I-steel and corner I-steel, wherein each straight-side I-steel and each corner I-steel form a rectangular annular structure at the top or side of the building main body, the overhanging parts of each straight-side I-steel are respectively provided with a positioning ring, and the overhanging parts of each corner I-steel are respectively provided with pulleys; each horizontal steel wire rope sequentially passes through the positioning ring on each straight-edge I-steel and the pulley on each corner I-steel to form an annular steel wire rope ring.
4. The construction method of the cantilever cable net type horizontal protection shed as claimed in claim 1, wherein the construction method comprises the following steps: comprising the following steps: arranging a plurality of I-beams on the top or the side surface of a building main body, wherein one end of each I-beam is fixed on the top or the side surface of the building main body, and the other end extends to the outside of the building main body in a cantilever manner to form a cantilever part; secondly, threading a plurality of horizontal steel wire ropes on the overhanging parts of the I-beams to enable all the I-beams to be connected in series through the horizontal steel wire ropes; thirdly, fixing the head end of the horizontal steel wire rope on a building main body or a first I-steel through which the horizontal steel wire rope passes, and tensioning the tail end of the horizontal steel wire rope to enable the tail end of the horizontal steel wire rope to have certain prestress; and fourthly, fixing the tail end of the horizontal steel wire rope on the building main body or on the last I-steel through which the horizontal steel wire rope passes or mutually lapping with the head end of the horizontal steel wire rope to form an annular steel wire rope ring.
5. The construction method of the cantilever cable net type horizontal protection shed as claimed in claim 4, wherein the construction method comprises the following steps: a plurality of I-steel rings around the top or side of the building main body to form a ring shape, and pulleys are arranged on the top or side of the building main body; fixing the head end of a horizontal steel wire rope on one side of a pulley on a building main body, enabling the tail end of the horizontal steel wire rope to pass through the pulley, sequentially passing through overhanging parts of each I-steel, and finally returning to and passing through the pulley; tensioning the tail end of the horizontal steel wire rope to enable the tail end of the horizontal steel wire rope to have certain prestress; the horizontal steel wire rope passes through the crossing node at the pulley to be lapped and locked to form an annular steel wire rope ring.
6. The construction method of the cantilever cable net type horizontal protection shed as claimed in claim 5, wherein the construction method comprises the following steps: the geometric center of each wire rope ring is positioned at the geometric center of the building main body, and each wire rope ring radially and divergently extends outwards along the geometric center of the building main body, so that an annular wire mesh is formed.
7. The construction method of the cantilever cable net type horizontal protection shed as in any one of claims 4-6, wherein the construction method is characterized by comprising the following steps:
each I-steel is obliquely arranged, the tail end of the overhanging part of each I-steel is higher than the fixed end of the overhanging part, which is fixed at the top of the building main body, and the inclined angle of each I-steel is more than 1 degree and less than 2 degrees.
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| CN201811324544.8A CN109184244B (en) | 2018-11-08 | 2018-11-08 | Cantilever cable net type horizontal protection shed and construction method |
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| CN201811324544.8A CN109184244B (en) | 2018-11-08 | 2018-11-08 | Cantilever cable net type horizontal protection shed and construction method |
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| CN109184244B true CN109184244B (en) | 2023-11-10 |
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